Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 479 · 40 questions

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

1. 1.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) a steel plate (d) oily paper
2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
3. 3.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) an object blocks light (d) the object is cold
8. 8.True or false: a wooden board is translucent. (a) True (b) False
9. 9.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) up (d) west
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
11. 11.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) nothing on your head (d) a cap or hat
12. 12.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
14. 14.🔦 Which of these is translucent? (a) a wooden board (b) butter paper (c) a steel plate (d) air
15. 15.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) chalk to mark shadows (c) a mirror (d) a magnet
17. 17.🔦 Which of these is transparent? (a) a wooden board (b) oily paper (c) a brick (d) clear glass
18. 18.🔦 Which of these is translucent? (a) oily paper (b) clear plastic film (c) a brick (d) clean water
19. 19.🔦 Which of these is opaque? (a) clear plastic film (b) clear glass (c) a book (d) clean water
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) a battery cell
22. 22.🔦 Which of these is opaque? (a) tissue paper (b) clear plastic film (c) your hand (d) frosted glass
23. 23.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a battery cell (d) a sunny open place
24. 24.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
26. 26.True or false: yeast is not needed for the shadow clock. (a) False (b) True
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
28. 28.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
29. 29.🔦 Which of these is translucent? (a) a book (b) a wooden board (c) your hand (d) tissue paper
30. 30.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
31. 31.True or false: clear plastic film is opaque. (a) True (b) False
32. 32.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) the stick grows (d) Earth keeps spinning
33. 33.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) a clock to check (d) chalk to mark shadows
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
36. 36.True or false: a brick is opaque. (a) True (b) False
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) frosted glass (d) a brick
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
40. 40.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the stick kept upright (c) the time of day

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